(function ($) {
    $.fn.jqueryzoom = function (options) {
        var settings = {
            xzoom: 200,
            yzoom: 200,
            offset: 10,
            position: "right",
            lens: 1,
            preload: 1
        };
        if (options) $.extend(settings, options);
        var noalt = '';
        $(this).hover(function () {
                var imageLeft = $(this).offset().left;
                var imageTop = $(this).offset().top;
                var imageWidth = $(this).children('img').get(0).offsetWidth;
                var imageHeight = $(this).children('img').get(0).offsetHeight;
                var noalt = $(this).children("img").attr("alt");
                var bigimage = $(this).children("img").attr("jqimg");
                $(this).children("img").attr("alt", '');
                $(this).children("img").attr("title", '');
                if ($("div.zoomdiv").get().length == 0) {
                    $(this).after("<div class='zoomdiv_bg'></div>");
                    $(this).after("<div class='zoomdiv'><img class='bigimg' src='" + bigimage + "'/></div>");
                    $(this).append("<div class='jqZoomPup'>&nbsp;</div>");
                }
                if (settings.position == "right") {
                    if (imageLeft + imageWidth + settings.offset + settings.xzoom > screen.width) {
                        leftpos = imageLeft - settings.offset - settings.xzoom;
                    } else leftpos = imageLeft + imageWidth + settings.offset;
                } else {
                    leftpos = imageLeft - settings.xzoom - settings.offset;
                    if (leftpos < 0) leftpos = imageLeft + imageWidth + settings.offset;
                }
                $("div.zoomdiv,.zoomdiv_bg").css({    top: imageTop, left: leftpos    });
                $("div.zoomdiv,.zoomdiv_bg").width(settings.xzoom);
                $("div.zoomdiv,.zoomdiv_bg").height(settings.yzoom);
                $("div.zoomdiv,.zoomdiv_bg").show();
                if (!settings.lens) $(this).css('cursor', 'crosshair');
                var bigwidth = $(".bigimg").get(0).offsetWidth;
                var bigheight = $(".bigimg").get(0).offsetHeight;
                var scaley = 'x';
                var scalex = 'y';
                if (isNaN(scalex) | isNaN(scaley)) {
                    var scalex = (800 / imageWidth);
                    var scaley = (800 / imageHeight);
                    $("div.jqZoomPup").width((settings.xzoom) / scalex);
                    $("div.jqZoomPup").height((settings.yzoom) / scaley);
                    //if (settings.lens)
                    $("div.jqZoomPup").css('visibility', 'visible');
                }
                $(document.body).mousemove(function (e) {
                    mouse = new MouseEvent(e);

                    xpos = mouse.x - $("div.jqZoomPup").width() / 2 - imageLeft;
                    ypos = mouse.y - $("div.jqZoomPup").height() / 2 - imageTop;
                    if (settings.lens) {
                        xpos = (mouse.x - $("div.jqZoomPup").width() / 2 < imageLeft) ? 0 : (mouse.x + $("div.jqZoomPup").width() / 2 > imageWidth + imageLeft) ? (imageWidth - $("div.jqZoomPup").width() - 2) : xpos;
                        ypos = (mouse.y - $("div.jqZoomPup").height() / 2 < imageTop) ? 0 : (mouse.y + $("div.jqZoomPup").height() / 2 > imageHeight + imageTop) ? (imageHeight - $("div.jqZoomPup").height() - 2) : ypos;
                    }
                    //if (settings.lens)
                    $("div.jqZoomPup").css({top: ypos, left: xpos});
                    scrolly = ypos;
                    $("div.zoomdiv").get(0).scrollTop = scrolly * scaley;
                    scrollx = xpos;
                    $("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex;
                });

            },
            function () {
                $(this).children("img").attr("alt", noalt);
                $(document.body).unbind("mousemove");
                if (settings.lens) $("div.jqZoomPup").remove();
                $("div.zoomdiv_bg").remove();
                $("div.zoomdiv").remove()
            });

        count = 0;
        if (settings.preload) {
            $('body').append("<div style='display:none;' class='jqPreload" + count + "'></div>");
            $(this).each(function () {
                var imagetopreload = $(this).children("img").attr("jqimg");
                var content = jQuery('div.jqPreload' + count + '').html();
                jQuery('div.jqPreload' + count + '').html(content + '<img src=\"' + imagetopreload + '\">');
            })
        }
    }
})(jQuery)
function MouseEvent(e) {
    this.x = e.pageX;
    this.y = e.pageY;
}